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shtirl [24]
3 years ago
12

Can some one do these questions and show work please and thank you

Mathematics
2 answers:
EleoNora [17]3 years ago
8 0

Answer:

9) So basically we have what they all add up to and we have 2 of the sides out of 3 so what we can do is take the perimeter and minus the two sides we do know to get the one we dont know.

Set up:

10x+5y - (3x+4y) - (5x-y)

Remove parenthesees

10x+5y-3x-4y-5x+y

Simplify

2x+2y (ANSWER TO 9)

10) This one is giving us a triangle and we know all 3 sides. Its asking for that the perimeter is which is all of the sides added so we should add them.

Set up:

(3a+4) + (2a-7) + (5a^2 + a)

Group them together so we dont make mistakes

5a^2 + 3a+2a+a + 4-7

Simplify

5a^2 + 6a - 3 (ANSWER TO 10)

<u><em>Let me know if you need any more help !</em></u>

babymother [125]3 years ago
6 0

Answer:

9) 3rd side = 2x+2y

10) 5a^2 + 6a - 3

Step-by-step explanation:

9) 10x+5y - ( 3x+ 4y) = 7x + y

7x + y - ( 5x - y ) = 2x + 2y

10)

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